Helmet bell



FIG. 1 is a right side elevation view of a first embodiment of myinvention;

FIG. 2 is a left side elevation view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a front elevation view; and,

FIG. 6 is a rear elevation view;

The ornamental design for a helmet bell, as shown and described.